Invention Grant
- Patent Title: High-strength hot-dip zinc plated steel material having excellent plating properties and method for preparing same
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Application No.: US16064757Application Date: 2016-12-21
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Publication No.: US11306381B2Publication Date: 2022-04-19
- Inventor: Il-Ryoung Sohn , Dae-Young Kang , Jong-Sang Kim , Tae-Chul Kim , Min-Suk Oh
- Applicant: POSCO
- Applicant Address: KR Pohang-si
- Assignee: POSCO
- Current Assignee: POSCO
- Current Assignee Address: KR Pohang-si
- Agency: Cantor Colburn LLP
- Priority: KR10-2015-0186561 20151224
- International Application: PCT/KR2016/014983 WO 20161221
- International Announcement: WO2017/111449 WO 20170629
- Main IPC: C21D6/00
- IPC: C21D6/00 ; C23C2/06 ; C23C2/40 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C23C2/02 ; C22C38/00 ; C23C2/26 ; C23C2/12 ; C22C38/22 ; C22C38/26 ; C22C38/28 ; C22C38/30 ; C22C38/32

Abstract:
Provided are a hot-dip zinc plated steel material and a method for preparing same, the hot-dip zinc plated steel material comprising: base iron comprising 0.01-1.6 wt % of Si and 1.2-3.1 wt % of Mn; a Zn—Al—Mg alloy plating layer; and an Al-rich layer formed on the interface of the base iron and Zn—Al—Mg alloy plating layer, wherein the rate of occupied surface area of the Al-rich layer is 70% or higher (including 100%).
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